Door furniture



A. MARCANTE July 17, 1962 DOOR FURNITURE g Sheets-Sheet 1 Filed May 22, 1959 FIG. 2.

FIG.7.

FIG. 6.

FIG.5.

FIG. 4.

INVENTOR. ANTON/0 MARCA/VTE A. MARCANTE DOOR FURNITURE July 17, 1962 2 Sheets-Sheet 2 Filed May 22, 1959 I INVENTOR. A/v7'0/v/o MARCANTE 2 o 3 T M n m R 2 e w G G P 4 H H F 1 3 9 B m 8 2 w s w G 0 y m m H F ,m\\\\\\\i\\\m m n4 a O m 2 2 tats The present invention relates to door furniture and in this context, by the term of furniture are to be understood the handles, knobs, of pushbutton or plunger locks, complete with the supporting plate fastened to the door.

A problem arising in door furniture especially in the case of pushbutton locks, is that of adapting the furniture to the door thickness which may be a feature varying notably in different examples.

The subject of the present invention is a furniture for doors including a plate fitted with a rose projecting from it and a knob, handle or similar part having a shank which is able to travel in telescopic relation to this rose. The shank is fitted with devices adapted to engage with corresponding devices carried on another part secured to a lock and in this way to effect a rapid coupling with this latter part.

With this layout, by causing the knob, handle or the like to telescopically move with regard to the plate, it is possible to adapt the furniture to any thickness whatsoever of a door, and simultaneously, by means of the engagement devices on the knob, handle or the like, and on the member securedto the lock, it is likewise possible to fasten these two members together with the utmost rapidity and without need for additional locking devices.

According to one distinctive feature of the present invention the means of engagement with the knob, handle or the like are provided on the guide tube of the plunger of a pushbutton lock, located in two or more positions and spaced axially so as to increase the feasibility of adapting the furniture as described in the invention to doors difiering considerably in thickness. In this instance the plunger of the lock is fitted with devices to modify its length in order to conform to the location of the engagement between the knob or the like and the guide tube of the plunger.

These and other characteristics of the invention will become more evident in the following detailed description given solely as of an example and therefore not restrictive, of some of the forms of its realisation and with reference to the attached drawings in which:

FIGURE 1 represents in perspective a knob parto-f a furniture according to the invention;

FIGURE 2 is a perspective view of a guide tube of a plunger in a lock in conjunction with which the furniture according to the invention is intended to operate;

FIGURE 3 is a partial perspective View of the fumiture plate designed to operate in conjunction with the knob of FIGURE 1;

FIGURES 4, 5 and 6 are cross-section views of three different embodiments of the spindle of a knob for furniture according to the invention;

FIGURE 7 is a perspective view of a variant of the guide tube of the plunger;

FIGURE 8 illustrates a front View of a modification of a plunger capable of operating in combination with the guidetube shown in FIGURE 7;

FIGURE 9 is an axial cross-sectional view of the structure shown in FIGURE 8 taken along the line 9-9;

FIGURE 10 is a cross-sectional view of the structure shown in FIGURE 9 taken along the line 1tl-10;

FIGURES 11 and 12 show two aria-l sections, in planes perpendicular between them, of another variant of the plunger;

FIGURE 13 is an axial cross-sectional view of a further modification of the plunger;

3,944,817 Patented July 17, 1962 FIGURE 14 is a cross-sectional view of the structure I shown in FIGURE 13 taken along the line 14-14; and.

FIGURE 15 shows in'axial section a fourth variant of the plunger.

Referring first to FIGURES 1, 2 and 3 it is seen that.

the embodiment of FIGURES 1 and 3 the shank and the rose have circular cross-sections each with two projecting ridges 6 and 7 respectively, in diametrically opposite locations.

Nevertheless the shank and the rose could be in any other interlocking forms. In FIGURES 4, 5 and 6 three other possible forms of the section of the shank are shown. More particularly FIGURE 4 shows a circular section with nine projecting ridges, FIGURE 5 a quadrilateral section with curved sides facing convexedly outwards and FIGURE 6 a circular section with two pairs of ridges at 90 between them with the projecting ridges of each pair diametrically opposite.

Examining next FIGURE 2., it is seen to represent a guide tube 8 for a plunger (not shown), which is fixed in the usual manner by the small rings 9 to the casing of the lock (also not shown). Tube '3 has a longitudinal slot 10 terminating in a seating 11 for a bayonet fixing. Shank 2 as shown in FIGURE 1 is provided with an internally projecting protrusion or tooth 12 in the form of a catch formed out of the wall of the shank and pressed inwardly into the shank itself.

Assembling the furniture described is very easy and speedy. Shank 2 is made to slide into the rose 3 in the obligatory angular position and the component is reversed on the tube 8 secured to the lock. The shank is made to travel along the tube 8 towards the plate 4 which will be held in a fixed position by the thickness of the door. In.

the course of its travel the tooth 12 passes through the slot 10 freely. When the tooth reaches the end of the slot a slight rotation is imparted to the knob in order to engage this tooth 12 in the seating 11 thus achieving a bayonet locking between the shank 2 and the tube 8. At

this point the plate 4 may be fixed to the door by the screws 5. To forestall possibility of a rotation of the knob in relation to the'tube to which it is hooked there is provided in tube 8 a threaded hole 13 into which screw 14 on the shank is fastened. Of course instead of this engagement by the screw any other suitable structure can be used such as a plug, a pin or similar device. It is to be noted that the possibility of rotation between the shank 'and the tube is prevented by the engagement of the ridges 6 of the shank in the slots or ridges 7 of rose 3, but it is preferable to avoid loading any stress on the wall of the rose as it is not designed to stand up under undue strains.

Knob 1 is, of course, fitted with an aperture 15 for the passage of the plunger (not shown).

FIGURE 7'is a variant of the tube 8, in which the slot 16 has two lateral coupling seatings 16 and 17 for tooth 12 of the shank of the knob instead of the one seating 11 of the tube in FIGURE 2. This variant allows a further extension of the range of thicknesses of doors for which the furniture may be adapted according to the invention.

problem. A bar 18 is slidably mounted. in two grooves made in plunger 20 and is provided with two threaded holes 21 and 22 spaced axially a given distance from each other, for receiving a screw 23 carried by a plate 24 fixedly attached to plunger in any convenient manner. It is obvious that by causing bar 18 to extend outwardly from plunger 20 so that screw 23 is engaged in hole 21, the plunger is extended and can be used on doors having a greater thickness.

In the variant of FIGURES 11 and 12 the interlocking of the plate 24 and bar 18 is obtained by means of a plug 25 fitted with a head 26 which can be made to penetrate by the action of a spring 27 in one or the other of the blind holes 28 and 29. Holes 28 and 29 are connected by a slot 30 which is just wide enough for the passage of the shank of plug 25 therethrough.

In variant of the FIGURES 13 and 14 the intermediate plate 24 of FIGURE 11 is omitted and bar 18 is folded over on itself at one end thereof and fitted on .two diametrically opposite sides with tappings 31 and 32 ready to operate in conjunction with an internal tapping 33 in the plunger 20. An adjusting screw 34 is screwed into a suitable hole in bar 18 and can be made to press against the opposite folded side 35 of bar 18 which is endowed with a certain elasticity. In contrast to the two previously described variants, the arrangement of FIGURES 13 and 14 allows a continuous control of the length of the bar 18. Screw 34 may be released and bar 18 moved in one or the other direction in tapping 33 in order to regulate its length with regard to plunger 20. It must be remembered that to achieve a good functioning of this layout the diametrically opposite tapped portions of the bar 18 should be slightly cambered presenting the convex surface towards the corresponding tappings in the plunger so that when the screw is released, the interlocking between the tappings of the bar and of the plunger is reduced to a minimum.

Finally, in FIGURE 15 there is represented a variant in which the engagement between the bar 18 and the plunger 20 is effected by means of a plate 36 which is fixedly attached to plunger 20 in any suitable way not shown. Plate 36 is provided with an elastic end which terminates in a small hook 37 which engages one or the other of the two apertures 38 and 39 formed in the bar 18. Dotted lines represent the hook end in the position of extraction from the apertures.

In all the examples described above a simple tool is required, for instance a screwdriver, to act on the bar and for this there is provided in tube 8 of FIGURE 7 an inlet hole 40.

The furniture according to the invention is easily and rapidly adapted to the various thicknesses of doors particularly when these doors have irregular wings or disproportionate profiles. In addition, the rapid engagement permits an exceedingly easy fixing on the door and also enables the furniture to be taken off with equal ease in order to replace it with other models of similar furniture.

Inasmuch as only certain forms of embodiment of the invention have been represented and described, it is obvious that numerous variant and modifications may be put forward without departing from the field of the invention itself.

I claim:

1. Door furniture associated with a lock structure comprising a plate having a projecting rose, a handle having a projecting shank for telescopically interfitting with said rose, said shank being provided with a tongue for interlocking with a groove in said rose for providing relative guided telescopic movement and restricted angular movement between said shank and said rose, locking means comprising a part of said lock structure, means forming a part of said shank for interlocking with said locking means of said lock structure at one of a plurality of axial positions of said shank depending on the thickness of a door, and means slidably mounted on said shank for actuating a lock upon axial movement thereof.

2. Door furniture comprising in combination a plate for mounting on a door and having a projecting rose, a hollow handle having a projecting hollow shank for telescopically interfitting with said rose, means for interlocking said shank with said rose for providing guided telescopic relative movement and restricted angular movement therebetween, a lock structure comprising a hollow cylindrical tube for telescopically fitting in said shank, said tube being provided with a plurality of axially spaced locking means, means forming a part of said shank for coacting with one of said locking means on said tube at one of a plurality of axial positions of said shank to form a connection between said shank and said locking structure, and a plunger mounted within said tube and extending through said shank for actuating a lock upon axial movement thereof.

3. Door furniture comprising in combination a plate for mounting on a door and having a projecting rose, a hollow handle having a projecting hollow shank for telescopically interfitting with said rose, means for interlocking said shank with said rose for providing guided telescopic movement and restricted angular movement therebetween, a lock structure comprising a hollow cylindrical tube for telescopically fitting in said shank, said tube being provided with a slot extending longitudinally thereof and a plurality of spaced slots extending laterally out of said longitudinally extending slot, a protrusion forming a part of said shank for coacting with one of said laterally extending slots at one of a plurality of axial positions of said shank to interlock said shank with said lock structure, and a plunger mounted within said tube and extending through said shank and said handle for actuating a lock upon axial movement thereof.

4. Door furniture comprising in combination a plate for mounting on a door and having a projecting rose, a hollow handle having a projecting hollow shank for telescopically interfitting with said rose, means for interlocking said shank with said rose for providing guided telescopic relative movement and restricted angular movement therebetween, a lock structure comprising a hollow cylindrical tube for telescopically fitting in said shank, said tube being provided with a slot extending longitudinally thereof and a plurality of spaced slots extending laterally out of said longitudinally extending slot, a tooth forming a part of said shank for coacting with one of said laterally extending slots at one of a plurality of axial positions of said shank to interlock said shank with said lock structure, and a plunger mounted within said tube and extending through said shank and said handle for actuating a lock upon axial movement thereof, said plunger comprising a bar adjustably mounted at one of a plurality of positions for controlling the length of said plunger.

5. Door furniture comprising in combination a plate for mounting on a door and having a projecting rose, a knob having a hollow shank extending therethrough and projecting therefrom for telescopically interfitting with said rose, means for interlocking said shank with said rose for providing guided telescopic relative movement and restricted angular movement therebetween, a lock structure comprising a hollow cylindrical tube for telescopically fitting in said shank, said tube being provided with a slot extending longitudinally thereof, said slot having at least one lateral extension, protrusion means forming a part of said shank for interlocking with said slot in said extension, and a plunger mounted within said tube and extending through said shank for actuating a look upon axial movement thereof, said plunger comprising a plug head, an extension bar slidably mounted in said head, and means for mounting said bar in one of a plurality of positions in said head for controlling the length of said plunger.

6. Door furniture comprising in combination a plate for mounting on a door and having a projecting rose, a knob having a hollow shank extending therethrough and projecting therefrom for telescopically interfitting with said rose, means for interlocking said shank with said rose for providing guided telescopic relative movement and restricted angular movement therebetween, a lock structure comprising a hollow cylindrical tube for telescopically fitting in said shank, said tube being provided With a slot extending longitudinally thereof, said slothaving at least one lateral extension, protrusion means forming a part of said shank for interlocking with said slot in said extension, and a plunger mounted within said tube and extending through said shank for actuating a lock upon axial movement thereof, said plunger comprising a plug head, a resilient hook fixedly mounted in said head, and an extension bar insert in said head, and fixedly attached to said head at one of a plurality of points by said hook for controlling the length of said plunger.

References Cited in the file of this patent UNITED STATES PATENTS 

